Honda 2004 Odyssey Service Manual page 495

Idle Control System
DTC Troubleshooting (cont'd)
DTC P1519 '01 Model:
Malfunction
1. Reset the PCM (see page 11-4).
2. Turn the ignition switch ON (II).
Is DT C P1519 indicated?
YES Go to step 3.
NO Intermittent failure, system is OK at this time.
Check for poor connections or loose terminals at
the IAC valve and at the PCM.
3. Turn the ignition switch OFF.
4. Disconnect the IAC valve 3P connector.
5. Turn the ignition switch ON (II).
6. Measure voltage between IAC valve 3P connector
terminal No. 2 and body ground.
IAC VALVE 3P CONNECTOR
IGP (YEL/BLK)
Wire side of female terminals
Is there battery voltage?
YES Go to step 7.
NO Repair open in the wire between the IAC valve
and the PGM-FI main relay.
7. Turn the ignition switch OFF.
11-186
IAC Valve Circuit
8. Check for continuity between body ground and IAC
valve 3P connector terminal No. 1.
IAC VALVE 3P CONNECTOR
GND (BLK)
Wire side of female terminals
Is there continuity?
YES Go to step 9.
NO Repair open in the wire between the IAC valve
and G101.
9. Disconnect PCM connector B (24P).
10. Check for continuity between body ground and
PCM connector terminal B23.
PCM CONNECTOR B (24P)
Wire side of female terminals
Is there continuity?
YES Repair short in the wire between the IAC
valve and the PCM (B23).
NO Go to step 11.
IACV (BLK/BLU)